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Temporal transcriptional profiles of colonic tissue during DSS-induce colitis

ABSTRACT: Temporal transcriptional profiles of colonic tissue during DSS-induce colitis

PROVIDER: PRJNA865658 | ENA |

REPOSITORIES: ENA

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Temporal transcriptional profiles of colonic tissue during DSS-induce colitis

Project description:Inflammation dramatically alters the gut microenvironment. To investigate the transcriptome changes the temporal profile of multiple signaling pathways throughout the progression of colitis, we collected the colonic tissue at a series of time points during DSS colitis for bulk RNA sequencing.

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miRNome of colonic crypt stem cells from DSS-induced colitis mice

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Project description:The lack of suitable animal models reflecting chronically relapsing inflammation and tissue remodeling have hindered fibrosis research in inflammatory bowel diseases (IBD). This study investigated changes in connective tissue in a chronic murine model using different cycles of dextran sodium sulphate (DSS) to mimic the relapsing nature of the disease. We used whole gene expression arrays to study differences in colonic gene expression levels between acute and more chronic DSS colitis, Acute and chronic relapsing colonic inflammation was induced in C57BL6 female mice using several cycles of exposure to DSS in drinking water, followed by recovery phases. Total RNA, extracted from snap frozen colon from five mice per condition was used to analyze mRNA expression via Affymetrix Mouse Gene 1.0 ST arrays.

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Colonic gene expression data of acute and chronic dextran sodium sulphate (DSS) colitis mice

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Temporal transcriptomic changes during DSS colitis development and resolution.

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Transcriptomic anlaysis of the early response of the colonic epithelium to colitis induction by dextran sodium sulfate (DSS)

Project description:We compared the transcriptional signatures of the colonic mucosa from control mice (WT) versus mice deficient for the epithelial pantetheinase Vnn1 (Vnn1KO) or overexpressing Vnn1 specifically in intestinal epithelial cells (VIVA transgenic mice), during the development of DSS-induced colitis.

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Effect of colonic epithelial knockout of tumor necrosis factor receptor 2 (TNFR2) in dextran sulfate sodium (DSS)-induced colitis

Project description:Colonic epithelial repair is a key determinant of health. After injury, repair initiates through phenotypic reprogramming of wounded epithelium to a regenerative state permissive for the activation of alternative stem cell populations and healing. Although cytokine signals such as interferons may help induce regenerative reprogramming, the signals that modify this state as the wound resolves remain largely unknown. Here we examined whether cytokine signaling mediated by tumor necrosis factor receptor 2 (TNFR2) influenced the wound repair process. We examined mice with targeted deletion of the Tnfrsf1b (TNFR2) gene in intestinal/colonic epithelium (Vil1::Cre;Tnfr2-f/f) and compared their transcriptional profiles to control (Tnfr2-f/f) mice. We sorted EpCAM+ (epithelial) cells from Vil1::Cre;Tnfr2-f/f and control DSS-treated mice and performed bulk RNA-Seq. Comparison of transcript expression profile before and after DSS-induced colitis in control (Tnfr2-f/f) mice revealed upregulation of pathways associated with metabolic regulation, ribosomal function, oxidative stress, TNF signaling, and focal adhesions after DSS treatment. Pathway enrichment analysis demonstrated elevated regenerative (“fetal”) intestinal signaling, reduced inflammation, and increased proliferative signaling in Vil1::Cre;Tnfr2-f/f colonic epithelium after DSS treatment. The knockout epithelium also showed reduced expression of markers of differentiated colonic epithelium and elevated expression of progenitor cell signaling. Thus, the transcriptional data were consistent with increased regenerative signaling in TNFR2-knockout epithelium, suggesting that TNFR2 has a role in restraining the relatively undifferentiated regenerative state.

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Temporal transcriptomic changes during DSS colitis development and resolution.

Project description:Temporal transcriptomic changes during DSS colitis development and resolution.

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